input_context.hxx

   1 //  $Id: input_context.hxx,v 1.9 2003/01/05 15:29:15 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction game
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #ifndef HEADER_CONSTRUO_INPUT_CONTEXT_HXX
  21 #define HEADER_CONSTRUO_INPUT_CONTEXT_HXX
  22
  23 #include <queue>
  24 #include "vector2d.hxx"
  25 #include "keys.hxx"
  26 #include "buttons.hxx"
  27 #include "events.hxx"
  28
  29 /** */
  30 class InputContext
  31 {
  32 protected:
  33   std::queue<Event> events;
  34 public:
  35   InputContext () {}
  36   virtual ~InputContext () {}
  37
  38   // Polling functions
  39
  40   /** @return true if the button with the given keycode is currently
  41       pressed, false otherwise */
  42   virtual bool get_key (int key) =0;
  43
  44   /** @return mouse x coordinate */
  45   virtual int  get_mouse_x () =0;
  46
  47   /** @return mouse y coordinate */
  48   virtual int  get_mouse_y () =0;
  49
  50   Vector2d get_mouse_pos () { return Vector2d(get_mouse_x (), get_mouse_y()); }
  51
  52   /** If an event is in the queue, copy it to \a event and return
  53       true, else return false and leave \a event untouched */
  54   bool get_event(Event* event);
  55 };
  56
  57 #endif
  58
  59 /* EOF */